|IPC(2)||Linux Programmer's Manual||IPC(2)|
ipc - System V IPC system calls
#include <linux/ipc.h> /* Definition of needed constants */ #include <sys/syscall.h> /* Definition of SYS_* constants */ #include <unistd.h>
int syscall(SYS_ipc, unsigned int call, int first, unsigned long second, unsigned long third, void *ptr, long fifth);
Note: glibc provides no wrapper for ipc(), necessitating the use of syscall(2).
ipc() is a common kernel entry point for the System V IPC calls for messages, semaphores, and shared memory. call determines which IPC function to invoke; the other arguments are passed through to the appropriate call.
User-space programs should call the appropriate functions by their usual names. Only standard library implementors and kernel hackers need to know about ipc().
ipc() is Linux-specific, and should not be used in programs intended to be portable.
This page is part of release 5.13 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.